clausen



H. P. CLAUSEN.

NUMBER INDICATING MEANS. APPLICATION FILED NOV. 211 I916. v Lfiflfi 1 Patented July 1, 1919.

2 SHEETS-SHEH 1.

THOIJS HUND. TENS UNITS H. P. CLAUSEN.

NUMBER INDICATING MEANS. APPLICATION FILED N0v.21,1916.

mmm I Patented July 1, 1919.

2SHEETSSHEET 2 LEW};

(b .4, a P i g3 h llli HENRY r; charisma, on MOUNT vnnnon, NEW YORK, assmnon T0 wns'rnnn nnno'rmo COMPANY, INCORPORATED, on NEW YORK, n. Y., A CORPORATION on NEW YORK.

Application filed November 21, 1916.

a citizen of the United States, residing at Mount Vernon, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Number-lndicating Means, of which the following is a full, clear, concise, and exact description;

This invention relates to telephone systems, and more particularly to number in dicating means employed in such systems.

In automatic telephone'systems it is particularly desirable to inform the calling party of the number of the called line to which his sub-station apparatus has been connected. In this way the calling party is quickly informed of any wrong connection due to any error in operating his impulse transn'iitter, or due to the failure of any of the switching devices by reason of their inaccurate operation.

In the so-called manual telephone system,

it is essential that the A operator be informed of the connection set up by the B operator without the necessity of asking the B operator the number of the called line to which the connection has been extended.

This invention has for its purpose the provision of means associated with the called line which will transmit impulses or other characterizations designating the called line, to inform the calling party or connecting operator of the number of the line connected with.

It further the object of this invention to provide a number indicating means common to a plurality of lines of the system in which it is employed.

Referring to the drawings, Figure 1 diagran'unati rally illustrates a portion of a c0nnectinf. opcrators cord circuit and a number indicating means which is common to a plurality lines in the'systen ;l

Fig. 2 is a perspective view partially brokpi away. of means for connecting the number indicating devices to the calling partys telephone line or connecting operators cord circuit; and M v Fig. 3 diagranmiatiii'ally illustrates an automatic telephone system cniploying the present invention. Only the connector cir- ('uit arrangement has been fully shown. The circuit arrangement of the line finder Specification of Letters Patent.

pulses as herein disclosed.

this system are arranged in groups with a.

NUMBER-INDICATING MEANS.

Serial No. 132,559.

and first selector are schematically indicated in this disclosure.

The number indicating means employed in this invention consists of a plurality of impulsers or numeral wheels adapted to make and break a predetermined number of times a signal circuit associated with the called line. A tone normally imposed on the signal circuit, is transmitted to the calling station as impulses, the number of which 'is determined by the impulser employed. It

will be understood, however, that phonographs or other means may be employed to speak the number of the called line, instead of using numeral wheels to transmit im- All the lines in Unrrnu marts. PATENT OFFICE. l

Patented July 1, 19M).

thousand. lines in a group,-those lines having the same thousands digit being included in the same group. The thousands groups are divided into groups of. one hundred lines it and these hundreds groups in turn divided into sub-groups of ten. All the lines of a particular thousands group or a particular hundreds group or a-sparticular tens group are adapted to be connected together in suceession by the mechamsm to be herein later described. All the llpes of whatever group having the same numerals for their thousands, hundreds, tens or units digit, are arranged to be connected to the same impulser or number wheel. For example, the called line herein shown, No. 9724, is successively connected to the No. 9 impulse wheel, the No. 7 impulse wheel, the No. 2 impulse wheel and the No. 4 impulse wheel.

1 .90 A plurality of cams 12, 13, 14. and 15 and.

ten impulsers or number wheels are mounted i on a constantly rotating shaft (not shown).

These cams have DIOJQCtlODS so positioned and timed that the thousands, hundreds,

tens and units digit signals will be connected to the signal circuit of the called line, in the proper sequence. Cams 12, 13, 14 and 15 succcsslvely close clrcuits for energizing the thousands magnet 26, hundreds n'iagnet 33,

tens magnet 38 and the units magnet The thousands magnet 26 operates a bar .24:

attached to its armature to connect through sets of contacts 0 all the calling lines of a also to connect these lines to the same im The hundreds particular thousands group together, and

pulser or number wheel. magnet 33 operates a bar 44- attached to its 'the hundreds magnet may be divided by suitable insulating blocks 16 into ten conducting portions oflengths sufficient to con- 'nect together the lines of a particular hundreds group. The tens bar is similarly divided into one hundred conducting portions 417 of lengths'sufiicient to interconnect the lines of a particular tens group. The armature of the units magnet 39 is provided with a non-conducting bar 18 preferably of the same length as the bars mentioned which operates sets of contacts C and C to close a break point in the signaling circuit associated with thecalled line, and thereby connect the proper units number wheel to this signaling circuit.

As soon as the projection 16 of the cam 12 engages the spring 17, it closes contact 18 ,th inductively connect aninterrupter 19 to the conductor 25 associated withthe called sub The tone generated bythis scribers line. Y interrupter informs the calling party that the number signals are about to be trans mitted over the line. The circuit of this interrupter may be traced from grounded battery, primary winding 20 of the induction coil, interrupter 19 to' ground. The tone thus generated is imposed on the following circuit: grounded battery, secondary winding 21 of the induction coil, conductor 22,

' contact 18, conductor 23, thousands conducting bar 21, conductor 25 connected to the jack of the called subscriber. When the projection 16 has disengaged the spring 17 the characteristic tone is then transmitted as impulses to the calling line. The number of impulses transmitted is determined by the impulser connected, to conductor 25. The thousands cam wheel 12, however, maintains the thousands magnet 26 energized over a circuit extending from grounded battery,

1 magnet 26, conductor 27, spring 17, cam 12,

to ground. The thousands magnet while energized, attracts its bar 2410 connect the number wheel of a particular thousands digit to all the lines of that group. In the present instance, the number wheel 31 which interrupts the signal circuit nine times, is connected to allthe lines in the nine thonsands group. As soon as the cam 13 is rotated to engage tlispring 32, a circuit is closed from grounded'battery, winding of the hundreds magnet 33, conductor 34,

; mosses,

spring 32, cam 13, to ground. The hundreds magnet 33 is energized and actuates its armature and the bar 4-4 carried thereby to connect all the lines in the seven hundreds sub-group of the ninth thousands group to the No. 7 number wheel 30. In the proper sequence the cam wheel 14 closes the spring 36 to energize the tens magnet 38 to connect the No. 2 number wheel 28 to the lines in that group, and the spring 37 closes to energize the units relay 39 to connect the particular contact individual to the called line to the No. 1 number wheel 29.

After the connecting operator has inserted her answering plug into the callin jack (not shown) and ascertained the num er of the desired line, she thereupon inserts the plug 5 into the jack 6. This completes a circuit extending from grounded battery,

lamp 7, primary winding 8 of an induction coil, sleeve 5 of the plug, sleeve 6 of the jack, cut-ofl' relay 9, to ground. The cut-off relay 9 attracts its armatures and at its right-hand armatures disconnects the line relay 10 from the called line. As soon as the cut-off relay 9 attracts its left-hand armature, abreak point! in the signal conductor 25 is closed to successively connect the impulsers or. number wheels corresponding to the digits of the called subscribers line to the sleeve of the jack of this line u'nderthe control of magnets 26, 33, 38 and 39. The circuit from the called subscribers jack, it will be remembered, extends to the sleeve of the plug, primary winding 8 of the induction coil, lamp signal 7 to ground. From this point the signals are inductively transmitted to the telephone set of the calling party from ground, condenser 1-0, secondary winding 41 of the induction coil, back contact and inner armature of supervisory relay 11, repeating coil 12 to free pole of battery. 4

By means of the repeating coil -13 these impulse signals are induced in the trunk line with which the calling partys line is connected. The impulse signals are transmitted to the calling station until the supervisory relay 11 is actuated when the called party answers. \Vhen the supervisory relay 11 is actuated it completes a circuit to shunt out the lamp signal 7, which circuit extends i'rom grounded battery, outer armature and front contact of supervisory relay 11, over the circuit previously described to ground at cut-oif relay 9. At the inner armature and back contact of supervisory relay 11, the impulse transmitting circuit is broken.

Referring to Fig. 3, there is shown in detail a connector circuit in which the present invention is employed. The connector is provided with an additional or fourth contact, which contact is connected in the signal circuit having the digit wheels correspondingtdthe number of the called partys line. In tlns system, when the calling subscriber whose substation is indicatedat 50f removes his recelver from the swltchhook,

the brushes 54c, 55 and 56 ofa selecting switch schematically shown. This switch in the well-known manner operates to extend the calling subscribers line to the connector switch. As soon asthis operation has taken place, line relay 57 is energized over a circuit extending from free 'pole of battery, lefthand Winding of line relay 57, upper side of the line, selector brush 54, finder brush 51, substation apparatus 59, finder brush 5'2, selector brush 55, right-hand winding of line relay 57 to the grounded pole of battery. Theline relay 57 attracts its armature and thereby completes a circuit to energize the first slow-releasing relay 58. This energizing circuit extends-from ground, armature and front contacts of relay 57, winding of relay 58 to grounded battery. The relay 58 attracts its armaturcs and atits righthand'arm'ature closes a break point in the energizing circuit of the second slow-releasing relay 59. When the calling partytransmits impulses corresponding to the tens digit of the desired number, the relay 57 vibrates its; armature and at its back contact completes an energizing circuit for the relay 59,

which circuit extends from. grounded bat tery, winding of relay 59, front contact and right-hand armature of relay 58, back con tact and armature of relay 57, to ground. An operating circuit for the primary motor magnet 60 in parallel with the circuit just described is established from grounded batter winding of primary magnet 60, sideswitch wiper 61 in its first position, conductor 62, front contact and right-hand armature of relay 58, back contact and armature of relay 57, to ground. As soon as the relay 59 attracted its right-hand armature, an energizing circuit for the escape magnet 63 is completed from grounded; battery, winding of escape magnet 63, right-hand armature and front contact of relay 59, conductor 64:, front contact and armature of ringing trip relay G5, to ground. At the close of the tens series of impulses, relay 57 attracts its armature for a relatively long interval and thereby interrupts at its armature and back contact the energizing circuit for the relay 59. The relay 59 retracts its armatures, and at its front contact and right-hand armature interrupts the energizingcircuit forthe escape magnet 63,

which moyes the side switch into its. second position. f'Twhe connector switch" is now in condition receive the units series of impulses. VVhen the line relay 57 vibrates its armatures in response to the units series of impulses, it reestablishes the energizing circuit for the relay 59, which extended from grounded battery, windingofrelay 59, front? contactand right-hand armature of relay '58, i back contactand armature of relay 57, to ground. The relay 59again attracts its an matures and at its right-hand armature and. front contact again establishes the energizing circuit for escape magnet 63, until the 1. line relay 57 attracts its armature for a relar tively long interval at the close of the units series of impulses. Simultaneously with this energization of relay 59, secondary motor magnet 93 is actuated to move the connector brushes into engagement with the ter- 5 minals of the called line. This operating M circuit extends from grounded batter magnet 93, side-switch Wiper 61 in its second position, to ground at the armature and back contact of relay 57.

In'a'ccordance with the present invention, u

this connector switch is supplied with anad- .85 ditional brush 90, and the called line with it additionalterminals 91. 'The terminal 91 through conductor 25 is connected to a num ber indicating device similar to' that (118* closed in Fig, 1. As soon as the brush 90 i I will be repeated to the calling party until the i 95 called party answers. As soon as the called arty removes his receiver from the switchliook, the relay 67 is energized, and when it attracts its left-hand armature, it interrupts the communicating circuit just described. "10

In the present system the test terminals of 1 busy lines are characterizedby the presence of ground. If the desired lineis busy, a circuit forthe release magnet 66 will be esy tablished fromgrounded battery, right-hand winding of release magnet (36, right-hand armature and back contact of relay 67, off normal contact 68, conductor 69, left-hunch armature and back contact of relay 59, now de'e'nergizcd, conductor 70, side-switch wiper 71. in its second position, test brush 72, to the test terminal 73 connected to ground through a side-switch wiper similar to 71 in its fourth position to another connector which has seized this line. The release magnet (56 is energized and at its right-hand. armature closes a circuit which operates to connect the busy-tone device to'the lower n1 side of the trunk to which the calling line has been connected. At the left-hand arma ture and front-contact of release magnet (36. a locking'circuit is established from ground through the lcft-hand high-resistance wind ingr, left-hand armature and front contact on l release magnet 66, conductor 75, left-haihch armature and front contact of relay 08, test contact 76,tcst brush 56, to grounded bat tel-y at the selector. i a If the desired line is idle,

this condition on thehtest terminal 73. The release mag net 66 is not energized, and the escape magnet 63, whose energizing circuit was inter? rupted at the right-hand armature and front contact of relay 59, was deenergized when the relay 59-retracts its armaturesat the;

The escape magnet thereupon moves its side-.

close of the units series of impulses.

switch wipers into their third position. In position 3 of the side switch, the circuit for the relay 59 is closedpreliminary to the.

ringing operation. This circuit extends as follows: grounded battery; relay 59, conductorlGQ, side-switch wiper 61 in its third 15 described f'Ihe energizationof the escape magnet '(ifl prepares a circuit for the applicationof ringing currentto the called line.

This circuit extends from grounded genera-.

tor 8O ringing trip relay 65, front contact and armature of escape magnet 63, conductor 81, side-switch wiper 82 in its ,third position, connector brush 83, terminal 84 of the subscribers line through the called partys substation apparatus to terminal 85, connector brush 86, side-switch wiper 87 111 1ts third position, conductors 78 and 79 to ground at the front contact and armature of relay 57. The ringing trip relay ()5 is marginal and does not operate until the called subscriber removes his receiver from the switchhook, whereupon the relay 65 attracts its'arm'ature and interrupts the energizing circuit of the escape magnet 6.3. The escape magnet thereupon moves the side-switch wipers into their fourth or talking position.

At the close of the conversation, if the calling party is the first to replace the receiver on. the switchhook, the line relay 57 denergizes and retracts its armature. This completes an operating circuit for the release magnets of the line finder. and selector switches which extend through test brush 56, test terminal 76, conductor 88, outer lefthand armature and front contact of relay 67, conductor 89, front contact and righthand armature of relay 58, back contact and armatureof relay 57 to ground. \Vhen the called party replaces his receiver on the switchhook, the relay 67 de'cnergizes and retractsits armatures; This completes the operating circuit for the release magnet 66,

-which may be'traced from the free pole of battery, right-hand .windmg of release magnet 66, right-handarmature and back contact of relay 67, off-normal contact 68, conductor 69, back contact and armature of re lay 5'8, conductor 88,0uter left-hand armature' and baclccontact of relay67, back contact and right-hand armature of relay 58,

' number of said back contact and armature of relay 57, to ground. The talking battery for the calling subscriber is supplied through the winding of line relay 57, while the talking battery for the called subscriber is supplied through the winding of relay 67.

It will be understood that the connecting operators cord circuit and the connecting operators position (not shown) are regarded as the equivalent of the calling line and calling telephone station.

What is claimed is: y

1. In a telephone system, a switch, an incoming line and a group of outgoing-lines terminating at said switch, means at said switch for connecting said incoming lineto any of saidout-going lines, and means common to said outgoing lines for signaling the number of the line to which the connection is established over said incoming line.

2. In a telephone system, an exchange, a calling line and called lines .terminating thereat, means for interconnecting said lines,

and'signaling' means at said exchangeassociated with said called line for signaling the called line over said calling line.

LL, 3.,In a telephone system, a calling line and a called line, means for interconnecting said lines, signaling means associated with said calledline and arranged to be connected .to said calling line, and means actuated over said called line for disconnecting said signaling means from the called line.

4. In a telephone system, calling line,

called lines, means for interconnecting a calling line and any of said called lines, signaling means associated with. and common to a plurality of called lines for transn'iitting the number of any selected called line over the calling line. 5. In a telephone system, calling lines, called lines, means for interconnecting said 'lines, number indicating means associated with and common to a plurality of called lines for telephonically communicating the number of any selected called line over the calling line.

6. In a telephone system, calling lines, called lines, means for interconnecting any of said calling lines to a selected called line, signaling n'ieans associated with and common to a plurality of called lines for transmitting the number of any selected called line over the calling line with which it is in engagement, and means actuated over the selected called line for disconnecting said signaling means from any calling line with which it is in engagen'ient.

7. In a telephone system, a calling line,

a plurality of called lines arranged in groups and sub-groups, means for connecting said calling line 'to any calledline, signaling 'of said for connecting any of said signaling devices first to the group and then to the sub-group.

8. In combination, a calling line, a plurality of called lines arranged in groups and sub-groups, means for interconnecting saidrcalling line with any of said called lines, signaling devices, a signaling conductor for each of said called lines, means for simultaneously connecting the signaling conductors of each of said groups to a signaling device, and means for simultaneously connecting the signaling conductors of the sub-groups to signaling devices.

9. In combination, a calling line, a plurality of called lines arranged in groups and sub-groups, a signaling conductor for each called lines, mechanism for interconnecting said calling line with any of said called lines, means for simultaneously connecting together the signaling conductors of a group, means for connecting together the signaling conductors of a sub-group, and signaling devices connected to said connecting means.

10. In combination, a calling line, a plurality of called lines, mechanism for interconnecting said calling line with any of said called lines, said called lines being arranged in groups of a thousand, the lines of a group being further divided into sub-groups of a 3 hundred lines, the lines of this sub-group being further divided into sub-groups of ten, a signaling conductor for each of said called lines, means simultaneously connect-- ing the signaling conductors of a group, 3

- sub-groups, a signaling conductor for each of said called lines, mechanism for interconnecting said calling line with any of said called lines, means for conductively connect- 4 ing the signaling conductors of a group simultaneously, means for conductively connecting the slgnaling conductors of a subgroup simultaneously, and means arranged to operate each of said connecting means to 5 conductively connect together the ,signaling conductors of the group and the sub-groups in proper succession.

In Witness whereof, I my name this 20th day 1 916. I

hereunto subscribe of November A. D. 5

HENRY P. CLAUSEN. 

